Technical Specifications Multi‑channel analog signal input interfaces, internal bus connection connector, auxiliary DC control power supply. Operating temperature 0 ℃ to +60 ℃, storage temperature ‑40 ℃ to +85 ℃, relative humidity 5%‑95% non‑condensing. PCB surface conformal coating treatment.
Functional Features Receives weak analog signals from field transducers and sensors. Executes hardware filtering and amplitude adjustment for input signals. Converts signal level to match main processor acquisition range. Transmits processed signals to internal bus for main logic board processing. Provides hardware over‑voltage protection for each input channel. Supports basic channel fault detection function.
Application Scenarios Original spare circuit assembly for GE industrial control and power equipment. Used for overhaul and spare‑part replacement in power generation and industrial process sites.
Performance Parameters High‑stable analog signal conditioning accuracy, good noise suppression performance, reliable channel over‑voltage protection response.
Material Composition Multilayer glass‑fiber epoxy printed circuit board. Analog signal filter and conditioning circuit components. Multi‑pin plug‑in connectors. Metal screw mounting hardware. Conformal protective coating layer.
Structural Characteristics Flat rectangular PCB layout. Multiple screw mounting holes for chassis fixation. Analog signal area and digital bus area maintain physical layout separation.
Working Principle Auxiliary DC power supplies on‑board circuit. Raw analog signals from field devices enter input terminals, pass through filter network and amplitude conditioning circuit. Adjusted analog signals are forwarded through connector to main processor board for further calculation and logic processing.
Installation Requirements Fasten circuit board inside equipment chassis with mounting screws. Fully seat and lock all plug‑in connectors. Restore auxiliary power supply, conduct signal loop test to verify input channel response performance.
Usage Notes Avoid applying over‑range voltage to analog input terminals. Anti‑static handling must be followed. Hot‑swap under powered condition is forbidden. Prevent scratching conformal coating surface.
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